(1) A pain in the ass.
(2) A real character.
(3) Someone who tends to be difficult, but still likeable.

(1) Boy that postal worker was rudely sarcastic - a real fucking pip.
(2) That guy over there is being overly friendly to everyone, asking them all sorts of questions, and just being too social in a weird way. Seems like a real pip.
(3) My wife was acting like a real pip last night, but of course, I still love her.

Most amazing girl that walks the face of the earth, crazy, funny and everyone wants to be her friend. If people aren't busy trying to be her friend they are busy trying to get into her pants because shes so damn fine!